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Old 10-20-2004, 02:22 AM   #1
true_atlantis
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Registered: Oct 2003
Distribution: fedora cor 5 x86_64
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dma turned off?


when i booted my computer i saw a message saying that the dma was turned off and it would hinder performance... i rebooted into winblows and then booted again into linux, but no message that time... when trying to extract a large file, i am experiencing a very long time to extract it... how can i see if the dma was turned off, and how can itu rni t back on? thanks
 
Old 10-20-2004, 03:28 AM   #2
Ice9
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Registered: Jun 2002
Location: Belgium
Distribution: Sidux
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You can check if dma is enabled by issuing the following in a terminal window
Code:
/sbin/hdparm /dev/hda
and then you can check the preformance of your dirve with
Code:
/sbin/hdparm -tT /dev/hda
There's a very good explanation of all you can do with hdparm at LinuxDevCenter
 
Old 10-20-2004, 03:29 AM   #3
acid_kewpie
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Registered: Jun 2001
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as root run "hdparm -d1 /dev/hda" to turn on dma on the primary master drive.
 
Old 10-20-2004, 08:48 AM   #4
320mb
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DMA needs to be enabled in your kernel before you can use it!!

Code:
 
# IDE chipset support/bugfixes
#
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
# CONFIG_BLK_DEV_ISAPNP is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_OFFBOARD is not set
# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
CONFIG_IDEDMA_PCI_AUTO=y
# CONFIG_IDEDMA_ONLYDISK is not set
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_PCI_WIP is not set
# CONFIG_BLK_DEV_ADMA100 is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_WDC_ALI15X3 is not set
 
  


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